Shaft bearing



NOV. 19, 1929. Y w, E, SEASTEDT 1,735,881

SHAFT BEARING Filed Aug. 8, 1928 Ja* ze ZZ- Z J5@ 2a as 6.

Ja j 30` l IH 6/ 25 f7@ 5 75 ff. ab 6?. 50. 50` \a 90 l ya 7g W V A Kr/tQ 5 Patente! Nov. 19, 1929 Application med August 8, 1928. Serial No.298,262.

This invention relates to improvements in shaft bearings and has for oneof its prmclpal objects the provision of means for etiiciently vjournaling a horizontal pr vertical drive shaft.

One of the important objects of this invention is to provide a shaftbearing which is self aligning and one which may be quickl andconveniently mounted upon and readi y detached from a drive shaft.

Another important object of this invention is the provision of a simplyconstructed combination radial and double thrust bearlng, a combinationbearing which is eiiicient in its operation and which can beeconomically constructed and marketed.

A further important obj ect of the invention is to provide a bearingwhich can be used for marine purposes, pum s and in short in anysituation 'in which lealage prevention 1s an im ortant factor.

ther and further important objects of the invention will be apparentfrom the disclo- I sures in the accompanying drawings and followingspecification.

. The invention, in a preferred form, is illustrated in the drawings andhereinafter more fully described.

In the drawings:

Figure 1 is a profile sectional View of a self aligning ring bearing.

l* igure 2 is a vertical elevation of the bearing shown in Figure1,parts being broken away.

Figure 3 is a vertical sectional view of a combination radial and doublethrust bearigure 4 is an enlarged horizontal sectional view of a portionof a modified form of the shaft bearing.

Figure 5 is a fragmentary elevation of the ring portion of the bearingshown in Figure 4.

As shown in the drawings The reference numeral 10 indicates generallythe inner race of a shaft bearing which is adapted to be rigidly mountedupon a drive shaft and turn therewith. The member 10 is preferably ofsplit construction, as shown best 50 at 12 in Figure 2, or if desiredcan be made and readily mounted upon the shaft in one piece.

The outer peripheral'face of the race 10 is concave and slidably mounteduponthe circumference thereof is a sectional ring 14.

The ring 14 is preferably constructed in a lurality of arcuate sections,the adjacent en s of the same being separated by lates or spacers 16.The inner peripheral fldces of the sectional ring 14 and spacers 16 areconvex and 60 are adapted to conform with the concave contour of theouter face of the inner race 10.

An outer race 18 is slidably mounted upon the outer face of the ring 14and is adapted to be rigid with respect to a bearing hous- 35 ing or amachine in which the bearing may be positioned. The member 18ispreferably of split construction as shown at 20 of Figure 2, but becauseof the arcuate character of the sliding surfaces of members 18 and 14respec- 70 tively, the race 18 can also be constructed solid, as thegeometrical center of the bea-ring is also the center kof curvature ofthe sliding surfaces. v

Referring particularly to Figure 3., the reference numeral 22 indicatesgenerally a vertical shaft upon which axial, upward and downward thrustsare exerted. The shaft 22 is rotatably mounted in a bearing housin 24.

A cover plate 26, preferably made in sectlons, forms a closure for theupper end of the housing 24 and is provided with a central openingthrough which the shaft 22 is adapted to be positioned. A stufiing boxor the like 28 surrounds the shaft 22 and comprises the edge of 85 thecentral opening in the plate 26. A flange 30 is integrally affixed tothe shaft 22 and is adapted to retain the inner race 10a of a bear# lingsimilar to the bearing shown in Figure 1. The outer race 18a is rigidlyattached to 90 the wall of the housing 24 and the sectional ring 14aslides freely between the two members 10a and 18, thereby providing aneicient proper as shown at 44.

up r race 36 and the middle race 40 are provlciel with concave slidingsurfaces 42 and s adapted to freely slide between these two surfaces isa sectiqnal ring 46, substantially similar to th rings 14 and 14. Y

A lower race 48 is loosely mounted uponh the shaft 22 and freely rotateswithin the housin 24.v Another sectional ring 50 identi-` cal wit thering 46 is positioned between the surfaces of the middle race 40 and the lower race 48. The middle race 40 is held 1n pgs tion on the shaftby'means of a'sleeve 52 w ch is in turn locked by means of the lock nuts54. Oil inlets 56 are provided in the walls of the housing 24, vthewaste oil seepin mto an o1l reservoir 56 from which it may drawn bymeans of a pipe 58 andreused.

Referring particularly to Figures 4 and 5 a modification of the bearing1s shown, this adaptation bein suitable for use on motor boats, lumps'an the like where the prevenprovided, and adapted to be slidablytion'o leakage past the bearing is an important factor.

The reference numeral 60 indicates generally a radial sectional view ofan outer race. This race 4is preferably constructed in two parts asshown at 62. An inner race 64 is also os1- tioned between the two racesis a sectidnal ring bearin 66. Each edge of themember 66 1s provi edwith a oove 68, best shown in Figure 5, and rigi ypositioned therein aretwo thin metal rings 70 which extend outwardly therefrom. Anothermetallic ring 72 serves to retain the rings 70 within the groove 68. A

The member 64 is adapted to be rigidly mounted upon the shaft to bejournale and turns therewith, while the member remains stationary beinrigidly attachedto the shaft housing. o insure liquid tight connectionsbetween 'the outer race and the vand I therefore o not purpose limitingthe patent granted hereon otherwise than as necessitated by the priorart. l

I claim as my lnvention: t

In -a double thrust bearing, a housing, a shaft within the housing, an uper race loosely mountedupon the shaft and freely rotatable within thehousing, a middle race rigidly' mounted upon the shaft, a lower raceloosely mounted upon the shaft and freely rotatable within the housingand a ring comprisin a plurality of sections slidably positioned tweenthe upper race and the middle race and between the middle race and thelower race, -l

the said three races having concave sliding surfaces, the said ringshaving convex upper and lower surfaces to conform with the co cave facesof the races. v

vIn testimony whereof I afiix my signature.

WILLIAM E. SEASTEDT.

housing and between the inner race and the shaft, a'plurality of corkrin and 76 respectively are provi ed in the outer or the like 74 y andinner faces'of the respective members 60 and 64.

For lubricating pur oses a plurality of oil holes 78 is provlde in theouter race 60 and in order to circulate the oil properly upon all thesliding surfaces a plurality of axial grooves 80 are spaced at intervalsupon the periphery of the ring 66. A plurality of raial connecting oilholes 82 are provided in the ring .66 to transmit the oil acquiredthrough the hole 78 to the inner sliding surface of the ring 66.

It can be readily seen that a liquid tight bearing is thus providedinasmuch as no water, oil or the like can pass the members 70 betweenthe outer and inner races, for the rings 70 being constructed of somesuitable

